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Validity of kirrchoff's laws

  1. Apr 20, 2013 #1
    1. The problem statement, all variables and given/known data

    a) Find the current through the battery and each resistor inthe circuit shown.
    b) What is the equivalent resistance of the resistornetwork?

    http://s3.amazonaws.com/answer-board-image/db89d3f298e4098e8852b10c30cb3f53.jpg


    2. Relevant equations

    Kirrchoff's laws

    3. The attempt at a solution

    I have one BIG doubt. The answer says that (whatever the number is), there is a current through R1. We were told in class that a current would prefer a clean path. Since there is a nice wire at the top, shouldn't this avoid any current to pass through R1??? ... Thanks for helping
     
  2. jcsd
  3. Apr 20, 2013 #2

    Doc Al

    User Avatar

    Staff: Mentor

    No. That "nice wire" at the top just connects to R2. If there were two points where R1 and just a wire were in parallel, then you'd be correct.
     
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